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1. WO2020031975 - CATALYST-COATED GASOLINE PARTICULATE FILTER AND METHOD FOR PRODUCING SAME

Publication Number WO/2020/031975
Publication Date 13.02.2020
International Application No. PCT/JP2019/030770
International Filing Date 05.08.2019
IPC
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35
Catalysts, in general, characterised by their form or physical properties
02
Solids
04
Foraminous structures, sieves, grids, honeycombs
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
39
Filtering material for liquid or gaseous fluids
14
Other self-supporting filtering material
20
of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
92
of engine exhaust gases
94
by catalytic processes
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38
of noble metals
54
combined with metals, oxides or hydroxides provided for in groups B01J23/02-B01J23/36118
56
Platinum group metals
63
with rare earths or actinides
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37
Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02
Impregnation, coating or precipitation
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02
for cooling, or for removing solid constituents of, exhaust
021
by means of filters
023
using means for regenerating the filters, e.g. by burning trapped particles
025
using fuel burner or by adding fuel to exhaust
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02
for cooling, or for removing solid constituents of, exhaust
021
by means of filters
033
in combination with other devices
035
with catalytic reactors
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
24
characterised by constructional aspects of converting apparatus
28
Construction of catalytic reactors
B01J 35/04 (2006.01)
B01D 39/20 (2006.01)
B01D 53/94 (2006.01)
B01J 23/63 (2006.01)
B01J 37/02 (2006.01)
F01N 3/025 (2006.01)
Applicants
  • エヌ・イーケムキャット株式会社 N.E. CHEMCAT CORPORATION [JP/JP]; 東京都港区浜松町2丁目4番1号 4-1, Hamamatsucho 2-chome, Minato-ku, Tokyo 1056124, JP
Inventors
  • 原 浩幸 HARA, Hiroyuki; JP
  • 望月 大司 MOCHIZUKI, Hiroshi; JP
  • 高山 豪人 TAKAYAMA, Akito; JP
  • 中山 裕基 NAKAYAMA, Hiroki; JP
  • 永田 誠 NAGATA, Makoto; JP
Agents
  • 稲葉 良幸 INABA, Yoshiyuki; JP
  • 内藤 和彦 NAITO, Kazuhiko; JP
  • 岡野 聡二郎 OKANO, Sojiro; JP
Priority Data
2018-15001309.08.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CATALYST-COATED GASOLINE PARTICULATE FILTER AND METHOD FOR PRODUCING SAME
(FR) FILTRE À PARTICULES D'ESSENCE REVÊTU DE CATALYSEUR ET SON PROCÉDÉ DE PRODUCTION
(JA) 触媒塗工ガソリンパティキュレートフィルター及びその製造方法
Abstract
(EN)
The present invention provides: a catalyst-coated gasoline particulate filter which has drastically improved PN collection rate in comparison to conventional GPF catalysts; a method for producing this catalyst-coated gasoline particulate filter; and the like. A catalyst-coated gasoline particulate filter 100 according to the present invention is provided with a catalyst layer that purifies an exhaust gas discharged from a gasoline engine. This catalyst-coated gasoline particulate filter 100 is provided with at least: a wall-flow type base material 10 wherein an introduction-side cell 11 that opens in an exhaust gas introduction-side end 11a and a discharge-side cell 12 that opens in an exhaust gas discharge-side end 12a are defined by a porous partition wall 13; and a porous dense collection layer 31 which is composed of a plurality of porous dense parts 31a wherein pores of the partition wall 13 are filled with inorganic fine particles, and which is formed along the wall-flow type base material 10 in the extending direction of the partition wall 13 so as to have a length La of from 0.4L to 0.9L relative to the total length L of the wall-flow type base material 10 when viewed in cross section.
(FR)
La présente invention concerne : un filtre à particules d'essence revêtu de catalyseur qui présente un taux de collecte de PN considérablement amélioré par rapport aux catalyseurs GPF classiques; un procédé de production de ce filtre à particules d'essence revêtu de catalyseur; et similaire. Un filtre à particules d'essence revêtu de catalyseur 100 selon la présente invention est pourvu d'une couche de catalyseur qui purifie un gaz d'échappement déchargé à partir d'un moteur à essence. Le filtre à particules d'essence revêtu de catalyseur 100 est pourvu d'au moins : un matériau de base de type à écoulement de paroi 10 dans lequel une cellule côté introduction 11 qui s'ouvre une extrémité côté introduction de gaz d'échappement 11a et une cellule côté décharge 12 qui s'ouvre dans une extrémité côté décharge de gaz d'échappement 12a sont définies par une paroi de séparation poreuse 13; et une couche de collecte dense poreuse 31 qui est composée d'une pluralité de parties denses poreuses 31a dans lesquelles des pores de la paroi de séparation 13 sont remplis de particules fines inorganiques, et qui est formée le long du matériau de base de type à écoulement de paroi 10 dans la direction d'extension de la paroi de séparation 13 de façon à avoir une longueur La de 0,4 L à 0,9 l par rapport à la longueur totale L du matériau de base de type à écoulement de paroi 10 lorsqu'elle est vue en coupe transversale.
(JA)
従来のGPF触媒に比してPN捕集率が飛躍的に改善された、触媒塗工ガソリンパティキュレートフィルター及びその製造方法等を提供する。ガソリンエンジンから排出される排ガスを浄化する触媒層が設けられた触媒塗工ガソリンパティキュレートフィルターであって、排ガス導入側の端部11aが開口した導入側セル11と、排ガス排出側の端部12aが開口した排出側セル12とが、多孔質の隔壁13により画定されたウォールフロー型基材10、並びに、前記隔壁13の気孔内に無機微粒子が充填された複数の多孔性緻密部31aからなり、前記ウォールフロー型基材10の前記隔壁13の延伸方向にわたって形成された多孔性緻密捕集層31であって、前記ウォールフロー型基材10の断面視の全長Lに対して0.4~0.9Lの長さLaを有する前記多孔性緻密捕集層31を少なくとも備える、触媒塗工ガソリンパティキュレートフィルター100。
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